Vulnerability Report

CVE-2025-40553

RCE

Title: Untrusted Data Deserialization to RCE in SolarWinds Web Help Desk

RCE

Proof Of Concept

PoC Available for CVE-2025-40553

CWE Category CWE-502
Published Date Jan 28, 2026
Modified Date Feb 26, 2026
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
17.35%

Vulnerability Summary

CVE-2025-40553: SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.

Impacted Vendors

S
solarwinds 1
W
webhelpdesk 1

Reference Links

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40553
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-40553 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/watchtowrlabs/watchTowr-vs-SolarWinds-WebHelpDesk-CVE-2025-40552-CVE-2025-40553
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.